The act of doggy style, hitting it from the back ferociously, sliding up to the bumper in order to saddle up and ride. Other variations include pterodactyl and is based on doggy style. Phallus can be inserted into anus or vagina. True 39ing normally includes a great deal of screaming. Blood flow may ensue. 39ing never includes homosexuals queer(s) and faggot(s).

1. When Josh was 39ing Lexxe, he lifted the sheets and pulled a Pterodactyl, screaming like a deranged dinosaur and shooting his cum deep into her unprepared asshole while Thomas, stationed in the closet, videotaped while softly stroking his erect rod.
2. Stemp said, "Bob 39ed Mary so much, she required stitches to repair her demolished vagina."